Biological sciences

Patterning the flower

Article Abstract:

Studies of Arabidopsis thaliana, or mouse ear cress, were conducted to gain an insight into the mechanism of florally determined shoot apical meristems of flowering plants, or angiosperms, and to determine the identities of the floral organs specified. The process of activation of the organ identity genes is still not clear but there is a possibility that the meristem identity genes may act in concert with the genes involved in general shoot meristem function. Little is known, however about how the meristem identity genes and the genes involved in shoot meristem structure interact.

A scaffold for basal body patterning revealed by a monoclonal antibody in the hypotrich ciliate Paraurostyla weissei

Article Abstract:

An immunocytochemical analysis using an antipericentriolar substance antibody with unique characteristics revealed some of the morphogenetic processes in the hypotrich ciliate Paraurostyla weissei. The intrastructure of the Paraurostyla contains basal bodies where cilia are held together with related dense substance and microtobular rootlets, which are renewed with each morphogenesis in the completely differentiated cell and in the transient one.